Dual opening cargo box door hinge arrangement

Abstract

The utility model relates to a double -open type goods box door hinge device, and mounting block is installed between protruding portion and fixed arm, and the lower turning axle is inserted in the protruding portion lower turning axle hole, fixed arm lower turning axle hole and mounting block lower turning axle hole, and the limit block is fixed on the movable seat, and the initial position recess and side open to position recess are equipped on the limit block, and the side open axle is inserted in movable seat side open axle hole, limit block side open axle hole and mounting block side open axle hole, and one end of torsional spring is fixed on mounting block, and the rolling sleeve and anti -drop connecting plate are installed on the other end of torsional spring, and the rolling sleeve is matched with initial position recess and side open to position recess, and the rolling sleeve can selectively embed in initial position recess and side open to position recess. The utility model can provide two kinds of opening mode, and have reliable positioning and keeping ability, and improve the convenience, multifunction and safety of pick-up vehicle use.

Description

Technical Field

[0001] This utility model relates to a cargo box door hinge device, specifically a double-opening cargo box door hinge device. Background Technology

[0002] Currently, the cargo bed door hinges of conventional pickup trucks generally use traditional fixed hinge structures, which have a relatively simple function, typically only allowing the cargo bed door to open by tilting downwards along the horizontal axis in one direction. While this design can meet basic cargo loading and unloading needs, it has many inconveniences and limitations in actual use: First, in complex loading and unloading scenarios, such as when oversized cargo needs to be loaded directly from the side of the cargo box, or when the cargo box door needs to be used as a temporary work surface, the downward-folding door panel will interfere with the ground, limiting operating space and potentially damaging the cargo or the door itself. Second, when the vehicle is parked near a wall or other obstacle, the downward-folding cargo box door requires a large clearance behind it; otherwise, it cannot be fully opened, severely impacting usability. Furthermore, the single downward-folding design cannot flexibly adapt to diverse usage needs; for example, it cannot achieve partial opening or horizontal opening of the cargo box door to optimize space utilization.

[0003] Furthermore, existing hinge structures typically only provide simple rotation functions and lack the ability to position or maintain the opening angle of the cargo door at multiple levels. On slopes or uneven surfaces, the cargo door may open or close unexpectedly due to its own weight, posing a safety hazard. At the same time, long-term unidirectional stress can easily lead to fatigue or deformation at the hinge connection points, affecting its service life.

[0004] Therefore, the existing conventional pickup truck cargo door hinge devices still have significant shortcomings in terms of functionality, adaptability, and safety. There is an urgent need for a new type of cargo door hinge device with a reasonable structure, capable of providing multiple opening modes (such as downward flipping, side opening, or other composite movement modes), and with reliable positioning and holding capabilities, in order to improve the convenience, versatility, and safety of pickup trucks. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a double-opening cargo box door hinge device that can not only open downwards but also open to the side.

[0006] According to the technical solution provided by this utility model, the double-opening cargo box door hinge device includes a torsion spring, a fixed seat, a fixed arm, a movable seat, a side opening shaft, a downward flip shaft, a mounting block, a limiting block, a rolling sleeve, and an anti-detachment connecting plate. The fixed base is provided with a protrusion, and a downward flip shaft hole is opened on the protrusion. A fixed arm is fixed on the fixed base, and a downward flip shaft hole is opened on the fixed arm. A downward flip shaft hole is opened on the mounting block. The mounting block is installed between the protrusion and the fixed arm. The downward flip shaft is inserted into the downward flip shaft hole of the protrusion, the downward flip shaft hole of the fixed arm, and the downward flip shaft hole of the mounting block. A side opening shaft hole is provided on the movable seat, a limiting block is fixed on the movable seat, an initial position groove and a side opening position groove are provided on the limiting block, a side opening shaft hole is provided on the limiting block, and a side opening shaft hole is provided on the mounting block. The side opening shaft is inserted into the side opening shaft hole of the movable seat, the side opening shaft hole of the limiting block and the side opening shaft hole of the mounting block. The axis of the side-opening shaft is perpendicular to the axis of the downward-turning shaft; One end of the torsion spring is fixed to the mounting block, and a rolling sleeve and an anti-detachment connecting plate are installed on the other end of the torsion spring. The rolling sleeve can rotate on the other end of the torsion spring, and the anti-detachment connecting plate can prevent the rolling sleeve from coming off the other end of the torsion spring. The rolling sleeve cooperates with the initial position groove and the side opening positioning groove, and the rolling sleeve can selectively embed into the initial position groove and the side opening positioning groove.

[0007] Preferably, the limiting block is further provided with a transition groove, which is located between the initial position groove and the side-opening position groove. The rolling sleeve cooperates with the transition groove, and the rolling sleeve can be selectively embedded in the transition groove.

[0008] This invention provides two opening modes and has reliable positioning and holding capabilities, improving the convenience, versatility and safety of pickup trucks. Attached Figure Description

[0009] Figure 1 This is one of the perspective views of the present invention in its initial position.

[0010] Figure 2 This is the second perspective view of the present invention in its initial position.

[0011] Figure 3 This is the third perspective view of the present invention in its initial position.

[0012] Figure 4 This is the fourth perspective view of the present invention in its initial position.

[0013] Figure 5 This is one of the perspective views of the present invention when it is in the side-opening position.

[0014] Figure 6 This is the second perspective view of the present invention when it is in the side-opening position.

[0015] Figure 7 This is one of the perspective views of the present invention when it is in the downward-folded position.

[0016] Figure 8 This is the second perspective view of the present invention when it is in the downward-folded position.

[0017] Explanation of reference numerals in the attached drawings: 1. Torsion spring; 2. Fixed seat; 2.1. Protrusion; 3. Fixed arm; 4. Movable seat; 5. Side opening shaft; 6. Downward flip shaft; 7. Mounting block; 8. Limiting block; 8.1. Initial position groove; 8.2. Side opening to position groove; 8.3. Transition groove; 9. Rolling sleeve; 10. Anti-detachment connecting plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] A double-opening cargo box door hinge device, such as Figure 1-4 As shown, it includes a torsion spring 1, a fixed seat 2, a fixed arm 3, a movable seat 4, a side opening shaft 5, a downward flipping shaft 6, a mounting block 7, a limiting block 8, a rolling sleeve 9, and an anti-detachment connecting plate 10. A protrusion 2.1 is provided on the fixed base 2, and a downward flip shaft hole is provided on the protrusion 2.1. A fixed arm 3 is fixed on the fixed base 2, and a downward flip shaft hole is provided on the fixed arm 3. A downward flip shaft hole is provided on the mounting block 7. The mounting block 7 is installed between the protrusion 2.1 and the fixed arm 3. The downward flip shaft 6 is inserted into the downward flip shaft hole of the protrusion, the downward flip shaft hole of the fixed arm, and the downward flip shaft hole of the mounting block. A side opening shaft hole is provided on the movable seat 4. A limiting block 8 is fixed on the movable seat 4. An initial position groove 8.1 and a side opening position groove 8.2 are provided on the limiting block 8. A side opening shaft hole is provided on the limiting block 8. A side opening shaft hole is provided on the mounting block 7. The side opening shaft 5 is inserted into the side opening shaft hole of the movable seat, the side opening shaft hole of the limiting block, and the side opening shaft hole of the mounting block. The axis of the side-opening shaft 5 is perpendicular to the axis of the downward-turning shaft 6; One end of the torsion spring 1 is fixed to the mounting block 7, and a rolling sleeve 9 and an anti-detachment connecting plate 10 are installed on the other end of the torsion spring 1. The rolling sleeve 9 can rotate on the other end of the torsion spring 1, and the anti-detachment connecting plate 10 can prevent the rolling sleeve 9 from coming off the other end of the torsion spring 1. The rolling sleeve 9 cooperates with the initial position groove 8.1 and the side opening positioning groove 8.2. The rolling sleeve 9 can selectively embed into the initial position groove 8.1 and the side opening positioning groove 8.2.

[0020] The limiting block 8 is also provided with a transition groove 8.3, which is located between the initial position groove 8.1 and the side-opening position groove 8.2. The rolling sleeve 9 cooperates with the transition groove 8.3, and the rolling sleeve 9 can be selectively embedded in the transition groove 8.3.

[0021] In this utility model, when designing the fixed base 2 and the fixed arm 3, sufficient space must be left for the torsion spring 1 to move around when the cargo box door is flipped down and opened.

[0022] In use, the cargo box door is fixed to the movable seat 4. When the cargo box door is in the initial position, the rolling sleeve 9 is engaged in the initial position groove 8.1.

[0023] like Figure 5 and Figure 6 As shown, when the cargo door is opened to the side, the cargo door, movable seat 4, and limiting block 8 rotate around the side opening shaft 5 under the force of the torsion spring 1. If the operator has less strength, the rolling sleeve 9 on the torsion spring 1 can first engage in the transition groove 8.3 to limit the opening, allowing the cargo door to open to a certain angle and maintain this angle. After a brief pause, the operation continues until the rolling sleeve 9 on the torsion spring 1 engages in the side opening positioning groove 8.2 to limit the opening. At this point, the cargo door is fully opened to the side. By setting the transition groove 8.3, the cargo door can be opened in sections. If the operator has greater strength, the rolling sleeve 9 on the torsion spring 1 can bypass the transition groove 8.3 and directly engage in the side opening positioning groove 8.2 to limit the opening. At this point, the cargo door is fully opened to the side. To close the cargo door to the side, simply reverse the operation.

[0024] like Figure 7 and Figure 8 As shown, when the cargo door is opened by tilting it downwards, the cargo door, movable seat 4, limit block 8, and mounting block 7 rotate around the tilting shaft 6 until the cargo door is tilted down to its final position. During the tilting process, the torsion spring 1 rotates together with the movable seat 4. To close the cargo door by tilting it upwards, simply reverse the operation.

[0025] This invention provides two opening modes and has reliable positioning and holding capabilities, thus improving the convenience, versatility, and safety of pickup trucks.

[0026] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A double-opening cargo box door hinge device, characterized in that: It includes a torsion spring (1), a fixed seat (2), a fixed arm (3), a movable seat (4), a side-opening shaft (5), a downward-folding shaft (6), a mounting block (7), a limiting block (8), a rolling sleeve (9), and an anti-detachment connecting plate (10). A protrusion (2.1) is provided on the fixed base (2), and a protrusion flip-down shaft hole is provided on the protrusion (2.1). A fixed arm (3) is fixed on the fixed base (2), and a fixed arm flip-down shaft hole is provided on the fixed arm (3). A mounting block flip-down shaft hole is provided on the mounting block (7). The mounting block (7) is installed between the protrusion (2.1) and the fixed arm (3). The flip-down shaft (6) is inserted into the protrusion flip-down shaft hole, the fixed arm flip-down shaft hole and the mounting block flip-down shaft hole. A side opening shaft hole is provided on the movable seat (4), a limiting block (8) is fixed on the movable seat (4), an initial position groove (8.1) and a side opening position groove (8.2) are provided on the limiting block (8), a side opening shaft hole is provided on the limiting block (8), a side opening shaft hole is provided on the mounting block (7), and the side opening shaft (5) is inserted into the side opening shaft hole of the movable seat, the side opening shaft hole of the limiting block and the side opening shaft hole of the mounting block; The axis of the side-opening shaft (5) is perpendicular to the axis of the downward-turning shaft (6); One end of the torsion spring (1) is fixed on the mounting block (7). A rolling sleeve (9) and an anti-detachment connecting plate (10) are installed on the other end of the torsion spring (1). The rolling sleeve (9) can rotate on the other end of the torsion spring (1). The anti-detachment connecting plate (10) can prevent the rolling sleeve (9) from coming off the other end of the torsion spring (1). The rolling sleeve (9) cooperates with the initial position groove (8.1) and the side opening positioning groove (8.2). The rolling sleeve (9) can selectively embed into the initial position groove (8.1) and the side opening positioning groove (8.2).

2. The double-opening cargo box door hinge device as described in claim 1, characterized in that: in The limiting block (8) is also provided with a transition groove (8.3). The transition groove (8.3) is located between the initial position groove (8.1) and the side opening position groove (8.2). The rolling sleeve (9) cooperates with the transition groove (8.3). The rolling sleeve (9) can selectively embed into the transition groove (8.3).

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